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Regurgitation and reingestion in bonobos (Pan paniscus): Relationships between abnormal and social behavior

By Lance J. Miller, Jennifer R. Tobey

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Abstract

Regurgitation and reingestion (R/R) is an abnormal behavior observed in great apes analogous to rumination syndrome in humans. A majority of the research on R/R in non-human primates has focused on gorillas and chimpanzees with little information relating to other species that also engage in this behavior. In addition, studies on R/R in non-human primates have primarily focused on diet with little information on other potential causes for this abnormal behavior. The purpose of the current study was to examine R/R in 14 bonobos (Pan paniscus) at two zoological institutions. This included examining the relationships between R/R and other bonobo behaviors as well as the effect of a change in social groupings on R/R. On average, bonobos engaged in R/R about 3.07% of the time and there were no significant differences found in relation to sex (P=0.190), rearing history (P=0.414) or age (rs=0.254, P=0.381). There was a positive correlation between R/R and aggressive behavior (rs=0.579, P

Publication Title Applied Animal Behaviour Science
Volume 141
Issue 1
Pages 65-70
ISBN/ISSN 0168-1591
DOI 10.1016/j.applanim.2012.07.011
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  1. Affiliation
  2. Aggression
  3. Animal management
  4. Animal welfare